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Wednesday, May 31 • 3:30pm - 4:00pm
098. (Paintings) Performance evaluation of UV inhibiting acrylic resin coated glass with modern and historic glazing systems

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UV radiation is the single largest contributing factor in fading of interiors including fabric, carpets, other furnishings, and art, and accounts for approximately 40% of all fading damage. Thus, photodegradation must be arrested to maintain the integrity of historic materials and finishes. The n-butyl acrylate methyl methacrylate copolymer emulsion with hindered amine light stabilizers (HALS) and ultraviolet light absorber (UVA), GOLDEN MSA, which is tested here is marketed as an art varnish compatible with various types of paint. Brush and spray applied to modern and historic glass, the coating was weathered in a controlled lab setting on mock-up windows in a Q-Lab QUV weathering machine and in the field on skylights at Eastern State Penitentiary (ESP) in Philadelphia. The coating was unconventionally applied to the exterior surface of the glass with various glazing combinations. After 1 year at ESP and 900 hours in the QUV, positive results proved the coating’s efficiency in blocking UV radiation. The UV readings, obtained by an ELSEC Environmental Monitor Type 765, at ESP decreased, due likely to environmental accumulation which scatters incident light waves, while readings slightly increased in the lab samples. Both values are a marked improvement to pre-coating values and these experiments demonstrate the versatility of the product for an array of material combinations. Quantitative data was supplemented with qualitative blue wool exposures and time-lapse photography.

avatar for Andrew Fearon

Andrew Fearon

Chief Conservator, Materials Conservation
Since 1995, Andrew Fearon has worked in the field of conservation encompassing architecture, decorative arts, and archaeological materials. In 2006 he joined the Philadelphia based firm Materials Conservation where he currently serves as Chief Architectural Conservator specializing... Read More →
avatar for Janelle Elyse Sahutski

Janelle Elyse Sahutski

Architectural Conservator, Preservation Virginia
Janelle Elyse Sahutski recently joined Preservation Virginia as their Architectural Conservator. She oversees all aspects of historic conservation work at the organization's sites located across the state, including Historic Jamestown and Patrick Henry's Scotchtown. Before joining... Read More →

Wednesday May 31, 2017 3:30pm - 4:00pm CDT
Riverside West Exhibit Hall Exhibit Level, East Tower
  9. Poster, Paintings